Andaman Nicobar Group C 2023: Group B (NG) and Group C technical posts under Electricity, PBMC, Port Management Board and Labour, Paper 4

ELECTRICAL

1.

Magnetic flux has the unit of

(A)

Newton


(B)

Ampere-turn


(C)

Weber


(D)
Tesla

Ans:: Weber

2.

If 1 A current flows in a circuit, the number of electrons flowing through this
circuit is

(A)
0.625 × 10^19

(B)
1.6 × 10^19

(C)
1.6 × 10^-19

(D)
0.625 × 10^-19

Ans:: 0.625 × 10^19

3.

A Schering bridge can be used for the ______________

(A)
protecting the circuit from temperature rises

(B)
testing capacitors

(C)
measuring voltages

(D)
measuring currents


Ans:: testing capacitors


4.

A multiplier is __________

(A)
non-capacitive

(B)
capacitive

(C)
non-inductive

(D)
resistive

Ans:: non-capacitive

5.

Increasing secondary burden _____________

(A)
decreases Is

(B)
keeps Is constant

(C)
decreases Ip

(D)
increases Is


Ans:: increases Is

6.
The relation between the resistances in the given Wheatstone bridge circuit is




(A)
P/S = R/Q

(B)
PR = QS

(C)
P/Q = R/S

(D)
PQ = RS


Ans:: P/Q = R/S

7.

Which of the following is secondary cell?

(A)
Dry cell

(B)
Leclanche cell

(C)
Voltaic cell

(D)
Lead acid cell


Ans:: Lead acid cell

8.

How many cycles will an AC signal make in 2 seconds if its frequency is 100 Hz?


(A)
50

(B)
100

(C)
150

(D)
200

Ans:: 200

9.

In DC generators, current is fed up to the external circuit from armature
through _______


(A)
Commutator

(B)
Direct wire

(C)
Slip rings

(D)
Cannot be determined

Ans:: Commutator


10.

For a constant emf, if field current is reduced then the speed of the DC motor
will_____


(A)
Remains same

(B)
Increases

(C)
Decreases

(D)

Can’t say

Ans:: Increases


11.
For the parallel operation of two single phase transformers it is necessary that
they should have


(A)
same efficiency

(B)
same polarity

(C)
same kVA rating

(D)
same number of turns on the secondary side

Ans:: same polarity


12.

During open circuit test (OC) of a transformer _____________

(A)
primary is supplied rated kVA

(B)
primary is supplied full-load current

(C)
primary is supplied current at reduced voltage

(D)
primary is supplied rated voltage

Ans:: primary is supplied rated voltage

13.

In Sumpner’s test _____________

(A)
Two secondaries are connected in phase opposition

(B)
Two secondaries are connected in phase addition

(C)
Can be connected in either way

(D)
Never connected with each other

Ans:: Two secondaries are connected in phase opposition

14.

Buchholz’s relay will give warning and protection against ___________

(A)
Electrical fault inside the transformer itself

(B)
Electrical fault outside the transformer in outgoing feeder

(C)
For both outside and inside faults

(D)
Cannot be determined

Ans:: Electrical fault inside the transformer itself

15.

What should be ideal volatility and ideal viscosity of the transformer oil?

(A)
Low, low

(B)
High, high

(C)
Low, high

(D)
High, low

Ans:: Low, low


16.

Insertion of external resistance in the squirrel cage induction motor _________


(A)
increases torque

(B)
decreases torque

(C)
increases torque for some seconds and then decreases

(D)
does not affect

Ans:: increases torque

17.
Which of these resources does not produce CO2 during electricity generation?

(A)

Coal

(B)
Methane

(C)
Uranium

(D)

Biogas

Ans:: Uranium


18.

What is the source of tidal energy?

(A)
Movement of seawater

(B)
Movement of tide

(C)
Sunlight

(D)
Wind

Ans:: Movement of tide

19.

What is the amount of water and acid present in the electrolyte after the full
discharge of the battery?


(A)

90% of water and 10% of acid

(B)
85% of water and 15% of acid

(C)
70% of water and 30% of acid

(D)
75% of water and 25% of acid

Ans:: 85% of water and 15% of acid


20.

Which of the following device is used in the specific gravity test?

(A)
Cadmium rod

(B)
Voltmeter

(C)
Cell voltage tester

(D)
Hydrometer

Ans:: Hydrometer

21.
The load factor is __________

(A)
always less than unity

(B)
less than or greater than 1

(C)
always greater than 1

(D)
less than zero

Ans:: always less than unity


22.
The volume of copper required for an ac transmission line is inversely
proportional to-

(A)
Current

(B)
Voltage

(C)
Power factor

(D)
resistance

Ans:: Current

23.
Improving power factor-

(A)
Reduces current for a given output

(B)
Increases losses in line

(C)

Increases the cost of station equipment

(D)
Increasing voltage from the output

Ans:: Reduces current for a given output

24.
The rated voltage of a 3 phase power system is given as-

(A)
rms phase voltage

(B)
peak phase voltage

(C)
peak line to line voltage

(D)
rms line to line voltage

Ans:: rms line to line voltage

25.

Which of the following is used as fuel for transportation

(A)

ethanol

(B)
aldehyde

(C)
ketone

(D)
Phenol

Ans:: ethanol


26.
Biodiesel is produced from oils or fats using

(A)
fermentation

(B)
transesterification

(C)
distillation

(D)
filteration

Ans:: transesterification

27.
Photovoltaic cell converts solar energy into

(A)
heat energy

(B)
electric energy

(C)
mechanical energy

(D)
chemical energy

Ans:: electric energy

28.
What happens to the resistance of semiconductors on heating?

(A)
Increases

(B)
Decreases

(C)
Remains the same

(D)
First increases later decrease

Ans:: Decreases

29.
A transistor may be used as a switching device or as a ………….

(A)
fixed resistor

(B)
tuning device

(C)
rectifier

(D)
variable resistor

Ans:: variable resistor

30.
The image to the right is of a

(A)
Coaxial connector

(B)
Ground/Earth

(C)
Chassis connection

(D)
Terminal

Ans:: Coaxial connector

31.
The symbol represent gate is




(A)
AND

(B)
OR

(C)
NOT

(D)
NAND

Ans:: AND

32.
The image to the right is of a

(A)
Fixed capacitor

(B)
 Electrolytic capacitor

(C)
Preset capacitor

(D)
Variable capacitor

Ans:: Variable capacitor

33.
How is the resistance of semiconductor classified?

(A)
High resistance

(B)
Positive temperature co-efficient

(C)
Negative temperature co-efficient

(D)
Low resistance

Ans:: Negative temperature co-efficient

34.

The concentration of doping is kept below ______________

(A)
1%

(B)
5%

(C)
10 %

(D)
50 %

Ans:: 1 %


35.
Which of the following materials cannot be used as solar cells materials?

(A)
Si

(B)
GaAs

(C)
CdS

(D)
PbS

Ans:: PbS

36.
A solar cell is a ___________

(A)
P-type semiconductor

(B)
N-type semiconductor

(C)
Intrinsic semiconductor

(D)
P-N Junction

Ans:: P-N Junction

37.
Zener Diode is mostly used as ____________

(A)
Half-wave rectifier

(B)
Full-wave rectifier

(C)
Voltage Regulator

(D)
LED

Ans:: Voltage Regulator

38.
Which of the following materials can be used to produce infrared LED?

(A)
Si

(B)
GaAs

(C)
CdS

(D)
PbS

Ans:: GaAs

39.
The minimum value of anode current below which it must fall to completely
turn-off the device is called as the


(A)

holding current value

(B)
latching current value

(C)
switching current value

(D)
peak anode current value

Ans:: holding current value

40.
The most common semiconductor used for manufacturing of FET is

(A)
Gallium Arsenide

(B)
Indium Arsenide

(C)
Indium Gallium Arsenide

(D)
Silicon

Ans:: Silicon

GENERAL AWARENESS


41.

Where did Lord Buddha breathe his last?

(A)
Rajgir

(B)
Bodh Gaya

(C)
Sarnath

(D)
Kushinagar

Ans:: Kushinagar

42.
During which prime minister was the strategy of “Rolling Plan” was adopted?

(A)
Jawahar Lal Nehru

(B)
Indira Gandhi

(C)
Morarji Desai

(D)
Lal Bahadur Shastri

Ans:: Morarji Desai

43.
Famous “Kalinga War” took place in which year?

(A)
258 BC

(B)
262 BC

(C)
232 BC

(D)
261 BC

Ans:: 261 BC


44.
Who was the author of book “Ghulam Giri”?

(A)
Jay Prakash Narayan

(B)
Jyotirao Phule

(C)
Dinbandhu Mitra

(D)
Bhim Rao Ambedkar

Ans:: Jyotirao Phule

45.
The letter of resignation of the President should be addressed to the following
person?

(A)

Speaker of Lok Sabha

(B)
Prime Minister

(C)
Chief Justice of India

(D)
Vice President

Ans:: Vice President

46.
Prime Minister Narendra Modi has inaugurated country’s first “National
Museum of Indian Cinema” at which place?


(A)
Chennai

(B)
Mumbai

(C)
Hyderabad

(D)
Pune

Ans:: Mumbai

47.
Which organ of the body produces the fluid known as bile?

(A)
Liver

(B)
Pancreas

(C)
Gall bladder

(D)
Kidney

Ans:: Liver


48.
Which enzyme catalyses the hydrolysis of starch into sugars?

(A)
Invertase

(B)
Amylase

(C)
Dehydrogenase

(D)
Anhydrase

Ans:: Amylase

49.
In fog, we are not able to see objects at a distance, although fog contains fine
drops of water suspended in air and water is transparent. Why this happens?


(A)
The light rays suffer total internal reflection

(B)
Most of the light is absorbed by the fog

(C)
Most of the light is scattered

(D)
Fog affects our vision adversely

Ans:: Most of the light is scattered

50.
Which battle laid the foundation of Mughal rule in India?

(A)
Battle of Plassey

(B)
Battle of Talikota

(C)
First Battle of Panipat

(D)
Battle of Haldighati

Ans:: First Battle of Panipat


GENERAL INTELLIGENCE AND REASONING

51.
Rahul moves 5 km towards south and then takes a left turn to move 5 km
more. Again, he takes a left turn and moves 10 km and finally, he moves 5 km
towards west. In which direction is he now from his initial position?

(A)
West

(B)
East

(C)
South

(D)
North

Ans:: North

52.
If ‘+’ denotes ‘ –‘ and ‘ – ‘ denotes ‘×’ and ‘×’ denotes ‘÷’ and ‘÷’ denotes ‘+’
then what will be the numeric value of 60 × 10 ÷ 40 + 6 – 5

(A)
200

(B)
16

(C)
144

(D)
3

Ans:: 200

53.
WAS, YCU, AEW, ?

(A)
CGY

(B)
HLD

(C)
FJB

(D)
GKC

Ans:: CGY

54.
Some equations have been solved on the basis of a particular system. On the
same basis, find the correct answer.
5 x 8 x 6 = 6854 ,
2 x 3 x 9 = 9321 ,
8x5x6=?

(A)
6587

(B)
2400

(C)
5421

(D)
6956

Ans:: 6587

55.
Lethargic : Vital :: Trite : ?

(A)
Unique

(B)
Slug

(C)
Lazy

(D)
Skinny

Ans:: Lazy

56.
Ornithologist: Bird:: Archaeologist:?

(A)
Islands

(B)
Mediators

(C)
Archaeology

(D)
Aquatic

Ans:: Archaeology

57.
Mahesh facing north and moves 20 km , then he turned to his right and moves
20 km and then he moves 10 km in north – east then he turned to his right and
moves 20 km and again he turned to his left and moves 20 km . in Which
direction mahesh is facing ?

(A)
South-East

(B)
North-East

(C)
South-West

(D)
North-West

Ans:B


58.
2, 3, 5,7,11,?, 17

(A)

12

(B)
13

(C)
14

(D)
15

Ans:: 13

59.
A man pointing to a photograph says, “The lady in the photograph is my
nephew’s maternal grandmother.” How is the lady in the photograph related
to the man’s sister who has no other sister?

(A)
Mother

(B)
Cousin

(C)
Mother–in–law

(D)
Sister–in–law

Ans:: Mother

60.
Among seven friends A, B, C, D, E, F and G, B is taller than only four other
friends. C is taller than D,A is taller than F. E is taller than one person only that
is G, who is the shortest in height among all friends. B is taller than A Who is
the tallest among all the friends?

(A)
C

(B)
E

(C)
A

(D)
B

Ans:: C

MECHANICAL

61.
Specific speed of reaction turbine is between?

a)
5 and 50

b)
10 and 100

c)
100 and 150

d)
150 and 300

Ans:: 10 and 100

62.
What is the shell diameter of a Cochran boiler?

a)
2.00 m

b)
1.50 m

c)
1.00 m

d)
2.75 m

Ans:: 2.75 m

63.
Which of the following is NOT a forced circulation boiler?

a)
Velox boiler

b)
Lancashire boiler

c)
Lamont boiler

d)
Benson boiler

Ans:: Lancashire boiler

64.
Which of the following is the lightest and most volatile liquid fuel?

a)
diesel

b)
petrol

c)
gasoline

d)
fuel oil

Ans:: gasoline

65.
DNC stands for_____

a)
digital numerical control

b)
direct numerical control

c)
double numerical control

d)
digital number control

Ans:: direct numerical control


66.
The cutting edges are spaced ______ on the circumference of the cutter.

a)
equally
b)
unequally
c)
can’t say anything
d)
moderate

Ans:: equally


67.
What is a shaping process?

a)

A type of casting process
b)
A type of grinding process
c)
A metal removal process in which reciprocating workpiece is fed against a
stationary tool

d)
A process in which metal is removed by a reciprocating tool fed against a
stationary workpiece

Ans:: A process in which metal is removed by a reciprocating tool fed against
a stationary workpiece

68.
__________ formula is used for determining short as well as long columns.

a)
Gilbert’s
b)
Rankine’s
c)
Johnson’s
d)
Euler’s

Ans:: Rankine’s

69.
Which of the following methods of disinfection is usually adopted in swimming
pools?

a)

Excess lime treatment
b)
Iodine – Bromine method
c)
Pottasium permanganate method
d)

Ultraviolet rays method

Ans:: Ultraviolet rays method

70.
How many elastic constants of a linear, elastic, isotropic material will be?

a)
2
b)
3
c)
1
d)
4

Ans::2

71.
In a multi plate clutch, the formula for T is given by ______

a)
n.µ.W.r1
b)
n.µ.W.(r1+r2)
c)
n.µ.W.R
d)
n.µ.W.r2

Ans:: n.µ.W.R

72.

In the figure given below, the areas BbC, CcD represent _______




a)
Power generated
b)
Power lost
c)
Fluctuation of energy
d)
Change in momentum

Ans:: Fluctuation of energy

73.
Determine the couple moment acting on the triangular plane shown.

a)
1600Nm
b)
100Nm
c)
2600Nm
d)
600Nm

Ans:: 2600Nm

74.
What is the physical principle behind momentum equation?

a)
Newton’s second law of motion
b)
Newton’s first law of motion
c)
Zeroth law of thermodynamics
d)
First law of thermodynamics

Ans:: Newton’s second law of motion

75.
Load per axle for a vehicle can be reduced by which of the following methods.

a)
By increasing distance between the axles
b)
By increasing the number of tyres
c)
By increasing the number of axles
d)
By decreasing the length of an axle

Ans:: By increasing the number of axles

76.
What does the curl of velocity field give us?

a)
Moment of Inertial
b)
Angular velocity
c)
Angular acceleration
d)
Moment

Ans:: Angular velocity

77.
In an electronic fuel injection, the servicing is very ___________

a)
difficult
b)
easy
c)
nil
d)
medium

Ans:: difficult

78.
The knock limit is dependent upon ___________

a)
Machine fuel tank
b)
machine shaft
c)
spark ratio
d)
design feature of the engine.

Ans:: design feature of the engine.

79.
How can we calculate the calorific value of a fuel at constant pressure?

a)
QC.V. = QC.P. – (Δn)×R×T
b)
QC.V. = QC.P. + (Δn)×R×T
c)
QC.P. = QC.V. – (Δn)×R×T
d)
QC.V. = QC.P. – (Δn)×R×T×S

Ans:: QC.P. = QC.V. – (Δn)×R×T

80.
How can we obtain liquid coal synthetically?

a)
Carbonisation of coal
b)
Hydrogenation of coal
c)
By heating of coal
d)
By cooling of coal

Ans:: Hydrogenation of coal

81.
Which is the gasifier that can be operated in small scale/amounts?

a)
Counter current gasifier
b)
Cross draught gasifier
c)
Co-current gasifier
d)

Fluidized bed gasifier

Ans:: Cross draught gasifier

82.
A petrol engine has compression ratio from __________

a)
6 to 10
b)
10 to 15
c)
15 to 25
d)
25 to 40

Ans:: 6 to 10

83.
The stearate ion has a ________ carbons long hydrocarbon chain.

a)
17
b)
19
c)
21
d)
23

Ans:: 17

84.
Water is used to extinguish

(A)
Class-A fires
(B)
Class-B fires
(C)

Class-C fires
(D)
Class-F fires

Ans:: Class-A fires

85.
The available capacity can be increased by ________

A.
Limiting subcontracting
B.
Using fewer workers
C.
Rerouting away from other work centers
D.
Scheduling overtime

Ans:: Scheduling overtime

86.
Which one of the following techniques is used for determining allowances in
time study?


A.
Acceptance sampling
B.
Linear regression
C.
Performance rating
D.
Work sampling

Ans:: Work sampling

87.
At what temperature does pure iron turn into FCC structure?

a)

800 °C
b)
900 °C
c)
910 °C
d)
810 °C

Ans:: 910 °C

88.
Transformation of hypoeutectic cast iron is applicable for the composition of
cast iron of ________ carbon.

a)
2.0-4.3%
b)
4.3%
c)
4.3-5.0%
d)
Over 5%

Ans:: 2.0-4.3%

89.
What indenter is used for Brinell test?

a)
Hardened steel ball
b)
Diamond ball
c)
Diamond prism
d)
Steel prism

Ans:: Diamond ball

90.
Which of the following filler metals is used in the electrical industry?

a)
BAG-1
b)
BAG-3
c)
BAG-5
d)
BAG-6

Ans:: BAG-5

91.
Which of the following inert gas is used with DC power supply only?

a)
Argon
b)
Helium
c)
CO2
d)
Nitrogen

Ans:: CO2

92.
Which of the following is not a factor for explosive welding?

a)
High relative velocity
b)
Less amount of plastics
c)
Proper orientation
d)
High pressure

Ans:: Less amount of plastics


93.
The percentage of thorium present in thoriated tungsten electrode used in
TIG welding is

(A)
0.5 to 1%
(B)
1 to 2.0%
(C)
2.5 to 3%
(D)
3 to 3.5%

Ans:: 1 to 2.0%

94.
Which of the following metal transfer method(s) is often limited to flat and
horizontal welding positions

(A)
Globular
(B)
Short-circuiting
(C)
Spray
(D)
Cold metal transfer

Ans:: Spray

95.
The motion of a shaft in a circular hole is an example of

a)
completely constrained motion
b)

incompletely constrained motion
c)
successfully constrained motion
d)
half completely constrained motion

Ans:: incompletely constrained motion

96.
Which of the following is the common application of Air standard refrigeration
system?


a)
Cold storage
b)
Car air conditioning system
c)
Domestic refrigerators
d)
Aircraft air conditioning

Ans:: Aircraft air conditioning

97.
Which of the following is carried out to obtain saturation state at the
thermodynamic WBT?

a)
Condensation
b)
Evaporation
c)
Compression
d)
Expansion

Ans:: Evaporation

98.
What is the value of addendum?

a)
1 module
b)
2 modules
c)
3 modules
d)
4 modules

Ans:: 4 modules

99.
Usually how many types of errors are present in scientific measurements?

a)
2
b)
3
c)
4
d)
5

Ans:: 3

100.
Which of the following represents India in ISO?

a)
PFRDA
b)
FSSAI
c)
BIS
d)
BCCI

Ans:: BIS